Automatic pressure-regulator.



P.v LULLI. AUTMATIG PRESSURE REGULATOR. APPLIUATIoN'HLnD PEB. 25, 190s.

2 SHEETS-SHEET 1.

. l 1'. LULL1. A UTGMAT'IO PRESSURE REGULATOR. APPLIoArIoRV 111.1111rms.' zu.' 190s.

Patented Feb. 2, 1905.

2 SHEETS-SHEET 2.

l No.. 911,249.

l PRIMO LULLI, or UcoLE, NEAR snUss'ELs,

BELGIUM, AssiGNoR 'ro socin'rn ANONYME.

LOXHYDRIQUE NTERNATIONALE, OF BRUSSELS, BELGIUM.

AUTOMATIC rnns'sUnn-nnenmron.

Specication of Letters Iatent.

puentenet. 2, ieee.

Applicaten led February 25, 1908. Serial No; 417,975.

To all 'whom 'it may concern: ,v

Be it known that I, PRIMo LULLI, a subject of Italy, residing at Uccle,near Brussels, 'in the Kingdom of Belgium, have invented new and usefulImprovements in Automatic Pressure-Regulators, of which the following isa specification.

This invention has for its object an automatic pressure regulator moreparticularly suitable for delivering, at a predetermined reducedressure, agas storedv in a reservoir This ressure Vregulatorisdifferentiated from similar apparatus of known construction by aspecial arrangement and combinations of parts as will be hereafterdescribed and pointed out inthe apf pended claims. I

The annexed drawing shows, by way of example, a pressure regulatorembodying the invention.

Figure 1 is a vertical section of the apparatus. Fi 2 is a section atright angles to the section s own in Fig. 1, certain parts of theymechanism being removed, and others shown in elevation. l

As it will appear immediately from an inspection of the said figures, inan apparatus constructed according to the invention the admission of gasat high pressure iseflected by means of two or more orifices of verwsmall section, the opening of which is con' trolled b y* means ofpivoted levers which reduce the force required vto keep lsaid oricesclosed, the said levers being controlled by means of two springsseparated by-a ldiaphragm and acting in opposite directions,

. the diiierence of pressure or tension thereof determining the pressureof the expanded gas.

In the practical realization of the invention the regu manometers fixedto the regulator casing and indicating respectively the gas-pressure inthe reservoiran the delivery pressure. According to the particularpurpose for which the regulator is used, the manometer indicating thedelivery pressure may be calibrated in a special 'manner to directlyindicate the nature of the work which can be performed by means of thepressure forwhich the apparatus isadjusted.'

The apparatus comprises a casing 1 having at the bottom an o' ening 2for the passage of a part 3, which is xed by a nut 4 and trav` ersed bya vertical conduit 5 for the entrance of lgas under pressure. Theapparatus is ator may be combined with two joined by means of the part 3to the pipe supplying gas under pressure. Within the casmg- 1 the part 3forms a support 6 having -at its upper part two bosses or lugs. 7traversed by two pins 8, on which are fulcrumed curved levers 9 and 10having at their lower ends plugs 11,- for example of fiber or ebonite,abutting against nozzles 12 at the ends of horizontal ducts 13 which.communicate with the conduit 5. The upper ends .14 of the levers 9 and10 are pivoted to two small links 15 connected bya pin 16- to a rod 17.The latter has at its upper end two nuts 18, land a spring 19 coiledround the rod 17 abuts .against the lower nut 18 and against a yoke 20which is fixed to the lugs 7.. The upper end of the rod 17 abuts againsta diaphragm 21, for exam lev of caoutchouc, `fastened down at the e geby the cover 22 of the casing 1. On this diaphragm rests a disk 23, de-

can be regulated by' means of a screw 25.

The upper part of the casing 1 has two lat eral proyections 26, to whichare` fixed two manometers 27 and 28. The manometer27 is connected by atube 29 to the conduit supplyin gas under pressure, as shown Fig. 2,-and t e manometer 28 has joined to it at 30 a tube which is screwed at31 to a valve or cock 32 for the delivery of the expanded as. Theapparatus may also, comprise a sa ety-valve 33 of suitableconstruction'. I

From the description which has-been given it is easy to understand theworkingof the apparatus. The spring 19 seated on the vo e hold thelevers 9 and 10 against the nozzles 12, with a regulatable amount offoice. If the force exerted by the spring 19 is properly adjusted theorifices for the inlet of gas at high pressure are closed until ,thesaid force is to a certain extent counteracted by the spring 24.The-pressure exerted bythe latter, suitably adjusted ,by means4 of thescrew 25, acts through the disk 23 and diaphragm -21 on thefrod tends tohold the levers 9 and 10 in the osition in which they close theoriiiceso the nozzlesl-Q. It is, therefore, possible to very exactly regulatethe pressure at which the gas-plasses out of tion eing effected by meansof the screw 35 which acts on the-spring 24. The expanded gas flows fromthe casing 1 through the valve or cock 32'." The manometer 27 indicatesthe pressed by a spring 24, thepressure of which 2() and acting on therod 17 tends to 17 to reducethe force which.

the apparatus,.the regulapressure at which gas is supplied to thereguator, and the manometer 28 indicates the pressure at which the gasis delivered. If, or exam le, the regulator is used in connection witcutting apparatus which works with the aid of a jet of oxy en underpressure, the manometer 28 may e calibrated to directly indicate thethickness of metal which can be cut with the aid of any given pressurewithinthe limits of the scale, the scale-divisions being in that caseaccording to thicknesses instead of according to atmospheres orkilograms.

The construction described not only has the advantage of allowing ofvery easy and exact regulation, but also the advantage that it allows ofusing a diaphragm absolutely inde endent of the closing devices, andthat on y a very small amount of force need be exerted for closing thegas-inlet orifices.

What I claim is:

1. In a )ressure regulator, a casing, a'central gas in et in saidcasing, horizontal ducts communicating with said gas inlet, and openingin the casing, plugs adapted to close said ducts, a plurality ofseparate levers for moving said plugs into closing relation with saidducts, and a sin le spring equally impelling said levers in theirclosing movement.

2. In a pressure regulator, a casing, a central gas inlet insaidvcasing, horizontal ducts communicating with said gas inlet andopening in the casing, plugs adapted to close said ducts, a plurality ofindependent levers adapted. to move said plugs into closing rela tion onsaid ducts, a rod connected to each of 'said levers and adapted to movethem equally into closing relation, and means for impelling said rod insuch movement.

3. In a ressure regulator, a casing, acen- Ltral gas i1 et projectingfrom the bottom of sald casing, horizontal ducts communicating with saidgas inlet, nozzles at the end of said ducts, plugs adapted to restagainst said nozzles, a single spring acting on the several plugs andmeans for regulating the action of said s ring.

4. v n 'a ressure regulator, a casing a central gas in et projectingvertically froml the bottom of said casing, horizontal ductscommunicating with said gas inlet, nozzles at the end of said ducts,lugs adapted to rest against the said nozz es, pivoted levers carryingthe said plugs, a spring actuated rod,

links connecting the pivoted levers to said rod, and a spring loadeddiaphragm acting on said rod.

5. In a Jressure regulator, a casing, a central gas inlet, projectinfrom the bottom of said casing, horizontal ucts communicating with saidgas inlet, nozzles at the end of the said ducts, plugs adapted to restagainst the said nozzles, levers carrying the said plugs, a diaphragmtwo springs acting in opposite directions upon the, said diaphragm andmeans whereby the difference of pressure of the two springs upon thediaphragm controls the pressure of the gas in the casing.

' 6. In a ressure regulator, a casing, a eentral gas in et projectingfrom the bottom of said casing, horizontal ducts communicating with saidgas inlet, nozzles at the end of said ducts, plugs adapted to restagainst said nozzles, pivoted levers carrying the said plugs, adiaphragm, two springs acting in opposite directions upon the saiddiaphragm and means whereby the pressure on the dia phragm istransmitted to the pivoted levers.

7. tIn a pressure regulator, a casing, two lateral projections providedon said casing, a high pressure manometer iixed to one of the saidlateral projections, a low pressure manometer ixed to the second lateralprojection, a central gas inlet projecting from the bottom of thecasing, horizontal ducts communicatin with said gas inlet, nozzles atthe end of said ducts, plugs adapted to rest against said nozzles,pivoted levers carrying the said plugs, a diaphragm, a spring actuatedrod resting against the lower face of said diaphragm, links connectingthe pivoted lcvers to said rod and a spring adapted to exert a variablepressure on the upper face of the dia ihragm, substantially asdescribed.

n testimony\whereof I have signed my name to this speciiic'ation in thepresence of two subscribing witnesses.

y PRIMo LULLI.

